CN104777955B - The drive circuit and contact panel of a kind of contact panel - Google Patents
The drive circuit and contact panel of a kind of contact panel Download PDFInfo
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- CN104777955B CN104777955B CN201510232449.5A CN201510232449A CN104777955B CN 104777955 B CN104777955 B CN 104777955B CN 201510232449 A CN201510232449 A CN 201510232449A CN 104777955 B CN104777955 B CN 104777955B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
- G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Position Input By Displaying (AREA)
- Liquid Crystal Display Device Control (AREA)
- Electroluminescent Light Sources (AREA)
- Computer Hardware Design (AREA)
Abstract
The present invention provides a kind of drive circuit of contact panel, including signal selecting circuit and de-multiplexing circuitry；In the display stage, signal selecting circuit will show that signal is sent to de-multiplexing circuitry, be exported after de-multiplexing circuitry demultiplexing to data wire；In the touch-control stage, touching signals are sent to de-multiplexing circuitry by signal selecting circuit, exported after de-multiplexing circuitry demultiplexing to data wire, make the data wire in touch-control stage consistent with the pulse of touching signals line, touch control electrode by using signal selecting circuit, reduce both voltage differences, the coupled capacitor and control IC during reducing touch-control load, reduce the charging interval of touching signals, lower power consumption, and the driving circuit structure is simple, will not increase substantially the complex degree of structure of panel.
Description
Technical field
The present invention relates to the drive circuit and contact panel of display technology field, more particularly to a kind of contact panel.
Background technology
Touch screen (Touch Panel, TP) includes external hanging type touch screen (Add On Touch Panel) and touch screen (In
Cell Touch Panel).External hanging type touch screen and display panel are separately manufactured and then together with being made by way of assembling,
Such Making programme certainly will increase the thickness of display screen, and if due to adding dried layer clear glass or film, display is thoroughly
Light rate and contrast can be also decreased obviously, and cost of manufacture can rise again.And touch screen, directly TP is integrated into display panel
Portion, reduce work flow, save the materials such as some glass or film, make that its low manufacture cost, light transmittance are preferable, module is thick
Spend relatively thin.So touch-control structure is integrated in a main trend for having become display technology field in display structure.
Fig. 1 be prior art display panel in array base palte structure chart.As shown in figure 1, the array base palte 10, including
Public electrode block 11 (public electrode block 11 is multiplexed with touch control electrode), the touching signals line 12 electrically connected with public electrode block 11 and
Other electric conduction routings 13 (display signal line as being used for transmitting display signal therefor, including data wire, scan line etc.), ordinary circumstance
Under, due to voltage difference between touching signals line 12 and other electric conduction routings 13 be present, touching signals line touching signals line 12 can be with
Other electric conduction routings 13 are coupled, and produce coupled capacitor, and Fig. 2 is the touching signals line and other electric conduction routings 13 of prior art
Or conducting element coupled caused by coupled capacitor tables of data.Touching signals line does not input identical with display signal line
Pulse signal so that larger voltage difference between touching signals line and display signal line be present, generate larger coupled capacitor.Such as
Shown in Fig. 2, touching signals line 12 coupled with display signal line caused by coupled capacitor be up to 247.14F.And other conducting elements
Caused coupled capacitor is relatively small between (such as pixel electrode, other public electrodes etc.) or other cablings and touching signals line 12
It is more, that is to say, that touching signals line 12 coupled with other electric conduction routings 13 or conducting element caused by coupled capacitor it is main
With with display signal line based on, substantial amounts of coupled capacitor can cause integrated circuit (integrated circuit, IC) driving
Scarce capacity, power consumption improve.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of drive circuit and contact panel of contact panel, above-mentioned to solve
Technical problem.
To use following technical scheme up to this purpose, the present invention：
In a first aspect, the embodiment of the present invention provides a kind of drive circuit of contact panel, including signal selecting circuit is conciliate
Multiplex circuit；
The first input end of the signal selecting circuit is connected with transmitting the touching signals input line of touching signals, the letter
Second input of number selection circuit and the display signal input line of transmitting display signal therefor connect, the signal selecting circuit it is defeated
Go out end to be connected with the input of the de-multiplexing circuitry；
The output end of the de-multiplexing circuitry connects each pixel electrode by data wire respectively；
The display signal that the display signal input line transmits is sent to described by display stage, the signal selecting circuit
De-multiplexing circuitry, the de-multiplexing circuitry are exported to data wire after demultiplexing；
The touching signals that the touching signals input line is transmitted are sent to described by touch-control stage, the signal selecting circuit
De-multiplexing circuitry, the de-multiplexing circuitry are exported to data wire after demultiplexing.
Second aspect, the embodiment of the present invention also provide a kind of contact panel, including the color membrane substrates and array being oppositely arranged
Substrate, and the drive circuit of the contact panel described in above-mentioned first aspect.
The drive circuit and contact panel of contact panel provided in an embodiment of the present invention, are existed by using signal selecting circuit
The touch-control stage inputs touching signals to data wire, makes the data wire in touch-control stage and the pulse in touching signals line, touch control electrode
Unanimously, both voltage differences are reduced, coupled capacitor and load of integrated circuit during touch-control is reduced, makes filling for touching signals
The electric time is reduced, lower power consumption, and signal selecting circuit is simple in construction, will not increase substantially the complex degree of structure of panel.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, it can also be implemented according to the present invention
The content of example and these accompanying drawings obtain other accompanying drawings.
Fig. 1 be prior art display panel in array base palte structural representation.
Fig. 2 is that electricity is coupled caused by the touching signals line of prior art is coupled with other electric conduction routings or conducting element
The tables of data of appearance.
Fig. 3 is the block diagram of the drive circuit for the contact panel that the embodiment of the present invention one provides.
Fig. 4 is that the touching signals line of the drive circuit of the contact panel provided using the embodiment of the present invention one is conductive with other
Cabling or conducting element coupled caused by coupled capacitor tables of data.
Fig. 5 is the block diagram of the drive circuit for the contact panel that the embodiment of the present invention two provides.
Fig. 6 is the circuit structure diagram of the drive circuit for the contact panel that the embodiment of the present invention two provides.
Fig. 7 is the circuit structure diagram for the de-multiplexing circuitry that the embodiment of the present invention three provides.
Fig. 8 is the circuit structure diagram of the drive circuit for the contact panel that the embodiment of the present invention three provides.
The touching signals for inputting de-multiplexing circuitry during Fig. 9 a are the touch-controls that the embodiment of the present invention three provides are believed with display
Number oscillogram.
Fig. 9 b be the embodiment of the present invention three provide touch-control during de-multiplexing circuitry output touching signals and display believe
Number oscillogram.
Embodiment
For make present invention solves the technical problem that, the technical scheme that uses and the technique effect that reaches it is clearer, below
The technical scheme of the embodiment of the present invention will be described in further detail with reference to accompanying drawing, it is clear that described embodiment is only
It is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art exist
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Before embodiments of the invention are provided, first for realizing that the touch-control structure of touch controllable function does simple introduction.Mesh
Before, in order to realize touch controllable function, on the design of touch-control structure, it can mainly use electromagnetic touch structure and capacitance touching control knot
Structure, wherein, electromagnetic touch structure is by setting the coil arranged along two different directions to realize electromagnetic touch function；Capacitive touch
Structure is controlled by setting a kind of touch control electrode or two kinds of electrodes (touch-control driving electrodes and touch-control sensing electrode), and passes through one kind
Capacitive touch function is realized in the mutual capacitance that is formed between the self-capacitance formed between electrode and ground or two kinds of electrodes.Due to this
The technical scheme of invention is directed to capacitance touching control structure, therefore, next mainly capacitance touching control structure is done and further said
It is bright.
, as needed can be by two kinds of electrodes when being designed for two kinds of electrodes of above-mentioned capacitance touching control structure
Be arranged on same layer, corresponding two kinds of electrodes can be set or arranged in a crossed manner with parallel interval, and using it is arranged in a crossed manner when
Infall realizes the electrical connection of respective electrode by bridge；Two kinds of electrodes can also be arranged on different layers as needed, and
Such a situation generally carries out two kinds of electrodes arranged in a crossed manner.
Self-capacitance touch-control is to realize touch controllable function by the electric capacity formed between touch control electrode and ground, and mutual capacitance touch-control is
Touch controllable function is realized by the electric capacity formed between touch-control driving electrodes and touch-control sensing electrode.
Therefore, the problem of being existed according to the above-mentioned introduction to capacitance touching control structure and prior art part, the present invention are real
Apply example and provide following technical scheme.
Embodiment one：
The embodiment of the present invention one provides a kind of drive circuit of contact panel.Fig. 3 is touching for the offer of the embodiment of the present invention one
Control the block diagram of the drive circuit of panel.
As shown in figure 3, the drive circuit of the contact panel, including signal selecting circuit and de-multiplexing circuitry；
The first input end of the signal selecting circuit is connected with transmitting the touching signals input line of touching signals, the letter
Second input of number selection circuit and the display signal input line of transmitting display signal therefor connect, the signal selecting circuit it is defeated
Go out end to be connected with the input of the de-multiplexing circuitry；
The output end of the de-multiplexing circuitry connects each pixel electrode by data wire respectively；
The display signal that the display signal input line transmits is sent to described by display stage, the signal selecting circuit
De-multiplexing circuitry, the de-multiplexing circuitry are exported to data wire after demultiplexing；
The touching signals that the touching signals input line is transmitted are sent to described by touch-control stage, the signal selecting circuit
De-multiplexing circuitry, the de-multiplexing circuitry are exported to data wire after demultiplexing.
It should be noted that transmitting display signal therefor is display signal input line, transmit touching signals is touching signals
Input line.Send display signal is the display driver circuit in the integrated circuit on contact panel, sends touching signals
Be touch-control driver element in integrated circuit on the contact panel.The integrated circuit is arranged on array base in contact panel
In the transparent substrates of the frame region of plate, touch-control driver element and display driver element are generally included, can realize and pass through display
Driver element provides display drive signals for the pixel cell on the contact panel and is described touch by touch-control driver element
The touch control electrode controlled on panel provides touching signals.
Need what is illustrated, multiplexing is exactly to close multichannel data transmitting on the way, and demultiplexing is exactly again by number in receiving terminal
Come out according to demultiplexing, branch transmission.Resource has largely been saved in multiplexing and the application of de-multiplexing technique.
Specifically, for display panel, it includes multiple public electrode blocks, and dispaly state is its normality.Showing
In the stage, public electrode block can be given to apply public voltage signal；In the touch-control stage, apply touching signals to public electrode block, i.e.,
Public electrode block is multiplexed with touch control electrode, and the touch control electrode is to be electrically connected to touch-control integrated unit by touching signals, and this is just
It is the time-sharing work pattern of dispaly state and touch-control state, and under touch-control state, applies touching signals to touch control electrode, with
Achieve touch controllable function.
Fig. 4 is that the touching signals line of the drive circuit of the contact panel provided using the embodiment of the present invention one is conductive with other
Cabling or conducting element coupled caused by coupled capacitor tables of data.
The touching signals line have input identical pulse signal with display signal line so that touching signals line and display signal
Small electric pressure difference between line be present, only produce less coupled capacitor.As shown in figure 4, touching signals line and display signal line coupling
Coupled capacitor caused by conjunction only has 33.49F, and power consumption will not increase substantially.
In the present embodiment, the drive circuit of contact panel, signal input line will be shown by using signal selecting circuit
Linked together with touching signals input line, touching signals are inputted on the data wire to the touch-control stage, make data wire in touch-control rank
The pulse of section is consistent with the pulse of touching signals line, touch control electrode, reduces both voltage differences, reduces the coupling during touch-control
Electric capacity and load of integrated circuit are closed, reduces the charging interval of touching signals, lower power consumption, and the letter of signal selecting circuit structure
It is single, the complex degree of structure of panel will not be increased substantially.
Embodiment two：
The embodiment of the present invention two provides a kind of drive circuit of contact panel.The drive circuit of the contact panel utilizes switch
Signal type of the control into data wire.Fig. 5 is the structure side of the drive circuit for the contact panel that the embodiment of the present invention two provides
Block diagram.
As shown in figure 5, on the basis of embodiment one, drive circuit described in the present embodiment is conciliate including signal selecting circuit
Multiplex circuit, the signal selecting circuit described in the present embodiment include first switch 41 and second switch 42, the first switch 41
It is described for controlling cut-off or conducting between the first input end of the signal selecting circuit and the display signal input line
Second switch 42 is used to control the cut-off between the second input of the signal selecting circuit and the touching signals input line
Or conducting.Specifically, in the display stage, the second input and the touching signals of the control signal selection circuit of second switch 42 input
Line ends, and the first input end of the control signal selection circuit of first switch 41 turns on display signal input line, and passes through display
The display signal that display driver circuit provides is transferred to data wire by signal input line, and gives corresponding pixel through data line transfer
Electrode；In the touch-control stage, first input end and the display signal input line cut-off of the control signal selection circuit of first switch 41, the
The first input end of two 42 control signal selection circuits of switch turns on touching signals input line, and passes through touching signals input line
The touching signals that touch-control driver element provides are transferred to data wire, make the data wire touch-control stage and touching signals line,
Touch control electrode has identical pulse, to reduce coupling effect between the two, reduces power consumption.
Wherein, the control terminal of the first switch 41, the input of first switch 41 and the output end point of first switch 41
The input of the first control line, display signal input line and the de-multiplexing circuitry is not connected to；The control of the second switch 42
End, the input of second switch 42 and the output end of second switch 42 processed are respectively connecting to the second control line, touching signals input
The input of line and the de-multiplexing circuitry.
It should be noted that the input of the control terminal of the first switch 41, first switch 41 and first switch 41
Output end is respectively connecting to the input of the first control line, display signal input line and the de-multiplexing circuitry；Described second opens
Close 42 control terminal, the input of second switch 42 is respectively connecting to the second control line, touch-control with the output end of second switch 42
The input of signal input line and the de-multiplexing circuitry.
Fig. 6 is the circuit structure diagram of the drive circuit for the contact panel that the embodiment of the present invention two provides.
As shown in fig. 6, the signal selecting circuit in the present embodiment includes first switch 41 and second switch 42, first switch
41 and second switch 42 be thin film transistor (TFT).Control terminal G1 inputs S1, the output end D1 of first switch 41 are respectively connecting to
First control line C1, the input of de-multiplexing circuitry and display signal input line, the control terminal G2 inputs S2 of second switch 42,
Output end D2 is respectively connecting to the second control line C2, the input of de-multiplexing circuitry and touching signals input line.In the present embodiment
In, first switch 41 and second switch 42 are all N-type transistor, and in the display stage, the second control line C2 is to second switch 42 1
Low level, end between the second input and touching signals input line of control signal selection circuit, the first control line C1 is to the
One 41 1 high level of switch, turn on, and pass through between the first input end and display signal input line of control signal selection circuit
The display signal that display driver circuit provides is transferred to data wire 60 by display signal input line, and through data line transfer to corresponding
Pixel electrode；In the touch-control stage, the first control line C1 gives the low level of first switch 41 1, and the first of control signal selection circuit
End between input and display signal input line h, the second control line C2 gives the high level of second switch 42 1, control signal selection
Turn between the first input end and touching signals input line of circuit, and put forward touch drive circuit by touching signals input line
The touching signals of confession are transferred to data wire, the data wire is had identical pulse in touch-control stage and touching signals line, with
Coupling effect between the two is reduced, reduces power consumption.
Alternatively, first switch 41 and second switch 42 can also be all P-type transistor, or, first switch 41 is N-type
One kind in transistor AND gate P-type transistor, second switch 42 are in addition, here, not in N-type transistor and P-type transistor
It is particularly limited to.
In the present embodiment, the drive circuit of contact panel, using thin film transistor (TFT) as switch with realize signal transmit
The purpose of switch, the signal selecting circuit comprising the thin film transistor (TFT) is allowed to show that signal input line and touching signals input line connect
It is connected together, in the display stage, the display signal transmitted by the display signal input line is sent to and described demultiplexes electricity consumption
Road, the de-multiplexing circuitry are exported to data wire after demultiplexing；In the touch-control stage, transmitted the touching signals input line is passed through
Touching signals be sent to the de-multiplexing circuitry, exported after the de-multiplexing circuitry demultiplexing to data wire, to the touch-control stage
Data wire input touching signals, make the data wire in touch-control stage (i.e. arteries and veins consistent with the pulse of touching signals line, touch control electrode
The frequency of punching is consistent with amplitude), reduce the voltage difference between data wire and touching signals line, touch control electrode, reduce touch-control
The coupled capacitor and load of integrated circuit of period, reduce the charging interval of touching signals, lower power consumption.Furthermore it is also possible to handle
The technological process for making the thin film transistor (TFT) for realizing first switch 41 and the function of second switch 42 is integrated into the making of display panel
In flow, do not increase process masks, technique is simple, will not greatly improve cost of manufacture and Production Time.
Embodiment three：
The embodiment of the present invention three provides a kind of drive circuit of contact panel.The drive circuit of the contact panel utilizes film
Transistor controls enter the signal type of data wire 60.
Fig. 7 is the circuit structure diagram for the de-multiplexing circuitry that the embodiment of the present invention three provides.As shown in fig. 7, in embodiment one
On the basis of, de-multiplexing circuitry described in the present embodiment includes the switch 44 of the 3rd switch the 43, the 4th and switchs 45 with the 5th, and described the
Control terminal G3, input S3, the output end D3 of three switches 43 are respectively connecting to the first clock signal CKA, data wire 60 and first
Pixel electrode 51, control terminal G4, input S4, the output end D4 of the 4th switch 44 are respectively connecting to second clock signal
CKB, the pixel electrode 52 of data wire 60 and second, the control terminal G5 of the 5th switch 45, input S5, output end D5 difference
The 3rd clock signal CKC, the pixel electrode 53 of data wire 60 and the 3rd are connected to, to the first pixel electrode 51, the second sub- picture
One in plain electrode 52, the 3rd pixel electrode 53 or certain several input show signals to control its picture to show.It is optional
, first pixel electrode 51, the second pixel electrode 52, the 3rd pixel electrode 53 can be respectively red sub-pixel
Electrode, green sub-pixels electrode, blue subpixels electrode, naturally it is also possible to need to adjust according to picture, do not done to this especially
Limit.
Optionally, the switch 44 of the 3rd switch the 43, the 4th and the 5th switch 45 are thin film transistor (TFT).
Specifically, the de-multiplexing circuitry includes the switch 44 of the 3rd switch the 43, the 4th and the 5th switch 45, the described 3rd opens
The output end for closing 43 connects the first pixel electrode 51, and the output end of the 4th switch 44 connects the second pixel electrode 52,
The output end of 5th switch 45 connects the 3rd pixel electrode 53, and the control terminal of the 3rd switch 43 connects the first clock
Signal, the control terminal connection second clock signal of the 4th switch 44, when the control terminal of the 5th switch 45 connects the 3rd
Clock signal, the input of the 3rd switch 43 is connected with the output end of first switch 41, the output end of second switch 42, described
The input of 4th switch 44 is connected with the output end of first switch 41, the output end of second switch 42, the 5th switch 45
Input be connected with the output end of first switch 41, the output end of second switch 42, the connection of the input of first switch 41 passes
The touching signals input line of defeated touching signals, the display signal input of the input connection transmitting display signal therefor of second switch 42
Line.
Further, the switch 44 of the 3rd switch the 43, the 4th and the 5th switch 45 are N-type TFT；Or institute
It is P-type TFT to state the switch 44 of the 3rd switch the 43, the 4th and the 5th switch 45.
Fig. 8 is the circuit structure diagram of the drive circuit for the contact panel that the embodiment of the present invention three provides.As shown in figure 8, institute
It is the 4th thin film transistor (TFT) to state first switch 41, and the second switch 42 is the 5th thin film transistor (TFT), the 4th film crystal
The touching signals input line of the drain electrode connection transmission touching signals of pipe, the control of grid connection first of the 4th thin film transistor (TFT)
Line C1, the source electrode of the 4th thin film transistor (TFT) connect respectively the source electrode of the 5th thin film transistor (TFT), de-multiplexing circuitry it is defeated
Enter end, the display signal input line of the drain electrode connection transmitting display signal therefor of the 5th thin film transistor (TFT), the 5th film crystalline substance
The grid of body pipe connects the second control line C2.
By the level signal of control input thin film transistor (TFT), the signal type of output film transistor can be controlled.No
Pipe uses N-type TFT, or P-type TFT, as long as realizing the circuit opening and closing purpose needed.
Further, the switch 44 of the 3rd switch the 43, the 4th and the 5th switch 45 are N-type TFT；Or institute
It is P-type TFT to state the switch 44 of the 3rd switch the 43, the 4th and the 5th switch 45.
Certainly, above-mentioned various circuits can also be under the technical background of the technical program, from different circuit side connectors
The component of formula and different parameters is to realize function corresponding to each circuit, and no longer citing repeats herein.
In the present embodiment, the drive circuit of contact panel, in the display stage, allow and show signal input line and touching signals
Input line is ended, and in the touch-control stage, allows display signal input line to be connected with touching signals input line.Fig. 9 a are implementation of the present invention
The touching signals of input de-multiplexing circuitry during the touch-control that example three provides and the oscillogram of display signal.As illustrated in fig. 9, it is defeated
The touching signals for entering de-multiplexing circuitry are consistent with the waveform pulse of display signal.Fig. 9 b are the touch-controls that the embodiment of the present invention three provides
The touching signals of the de-multiplexing circuitry output of period and the oscillogram of display signal.As shown in figure 9b, the demultiplexing during touch-control
The display signal cut-off of circuit output, touching signals conducting.According to Q=CU (Q is that the quantity of electric charge, C are that capacitance, U are electrical potential differences),
In the case where coupled capacitor is certain, the change for reducing U advantageously reduces Q size, and Q reduction can reduce the big of load
It is small, so as to reduce the load of integrated circuit.By allowing touching signals to be electrically connected with display signal, make phase shifting load consistent, reduce
Signal is delayed, and produces smaller phase difference, reduces coupled capacitor and load of integrated circuit during touch-control, makes filling for touching signals
The electric time is reduced, lower power consumption, and signal selecting circuit is simple in construction, will not increase substantially the complex degree of structure of panel.
Example IV：
It is the embodiment of contact panel provided in an embodiment of the present invention below.The embodiment of contact panel and above-mentioned touch-control
The drive circuit embodiment of panel belongs to same design, the detail content of not detailed description in the embodiment of contact panel, can be with
With reference to the drive circuit embodiment of above-mentioned contact panel.
The contact panel that this implementation provides, include the drive circuit of above-described embodiment one to three any one contact panel,
The description of operation principle and the explanation of related notion and explanation on correlation, refer to above-described embodiment one to three, herein not
Repeat again.
The embodiment of the present invention four provides a kind of contact panel, including the color membrane substrates and array base palte being oppositely arranged, and
The drive circuit of above-mentioned contact panel.
Specifically, the de-multiplexing circuitry is arranged on the non-display area of array base palte in the driving panel, the signal
Selection circuit is arranged on the non-display area of array base palte in the driving panel.
Specifically, the viewing area of the array base palte is additionally provided with least two public electrode blocks, each common electrical
Pole block is drawn by touching signals line, and each public electrode block is multiplexed with touch control electrode；
In the display stage, common electric voltage is applied at least two public electrodes block by the touching signals line；
In the touch-control stage, touching signals are applied at least two public electrodes block by the touching signals line.
It should be noted that contact panel includes the drive circuit of contact panel, can also include being used to support touch surface
The miscellaneous part of plate normal work, wherein, the contact panel is the contact panel described in above-mentioned each embodiment.Above-mentioned touches
It can be the contact panel of mobile phone, the contact panel of desktop computer, the contact panel of notebook, the touch-control of tablet personal computer to control panel
Contact panel of panel, the contact panel of electron album or Electronic Paper etc..
In the present embodiment, contact panel will show that signal input line and touching signals are defeated by using signal selecting circuit
Enter line to link together, the data wire 60 to the touch-control stage inputs touching signals, makes the data wire in touch-control stage and touch-control believe
Number line, the pulse of touch control electrode are consistent (i.e. the frequency of pulse is consistent with amplitude), reduce data wire and touching signals line, touch-control
Voltage difference between electrode, coupled capacitor and load of integrated circuit during touch-control are reduced, make the charging interval of touching signals
Reduce, lower power consumption, and signal selecting circuit is simple in construction, will not increase substantially the complex degree of structure of panel.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (9)
1. a kind of drive circuit of contact panel, it is characterised in that including signal selecting circuit and de-multiplexing circuitry；
The first input end of the signal selecting circuit is connected with transmitting the touching signals input line of touching signals, the signal choosing
The display signal input line of the second input and transmitting display signal therefor of selecting circuit connects, the output end of the signal selecting circuit
It is connected with the input of the de-multiplexing circuitry；
The output end of the de-multiplexing circuitry connects each pixel electrode by data wire respectively；
The display signal that the display signal input line transmits is sent to described demultiplex by display stage, the signal selecting circuit
With circuit, the de-multiplexing circuitry is exported to data wire after demultiplexing；
The touching signals that the touching signals input line is transmitted are sent to described demultiplex by touch-control stage, the signal selecting circuit
With circuit, the de-multiplexing circuitry is exported to data wire after demultiplexing, so that the pulse of the data wire and touching signals line
Pulse, and the pulse of touch control electrode are consistent.
2. the drive circuit of contact panel according to claim 1, it is characterised in that the signal selecting circuit includes the
One switch and second switch, the first switch are used to control the first input end of the signal selecting circuit to select with the signal
The output end conducting of circuit is selected, the second switch is used for the second input for controlling the signal selecting circuit and the signal
The output end conducting of selection circuit.
3. the drive circuit of contact panel according to claim 2, it is characterised in that the control terminal of the first switch,
The input of first switch and the output end of first switch are respectively connecting to the first control line, display signal input line and the solution
The input of multiplex circuit；The output end difference of the control terminal of the second switch, the input of second switch and second switch
It is connected to the input of the second control line, touching signals input line and the de-multiplexing circuitry.
4. the drive circuit of contact panel according to claim 2, it is characterised in that the first switch and described second
Switch is thin film transistor (TFT).
5. the drive circuit of contact panel according to claim 2, it is characterised in that the de-multiplexing circuitry includes the 3rd
Switch, the 4th switch and the 5th switch, the output end of the 3rd switch connect the first pixel electrode, the 4th switch
Output end connects the second pixel electrode, and the output end of the 5th switch connects the 3rd pixel electrode, the 3rd switch
Control terminal connect the first clock signal, it is described 4th switch control terminal connection second clock signal, it is described 5th switch
Control terminal connects the 3rd clock signal, the output of the input of the 3rd switch and the output end, second switch of first switch
End connection, the input of the 4th switch and output end, the output end of second switch of first switch connect, and the described 5th opens
The input of pass and the output end of first switch, the output end of second switch are connected, and the input connection transmission of first switch is touched
Control the touching signals input line of signal, the display signal input line of the input connection transmitting display signal therefor of second switch.
6. the drive circuit of contact panel according to claim 5, it is characterised in that the 3rd switch, the 4th switch
It is N-type TFT with the 5th switch；Or the 3rd switch, the 4th switch and the 5th switch are p-type film crystal
Pipe.
7. a kind of contact panel, including the color membrane substrates and array base palte being oppositely arranged, and claim 1-6 any one institute
State the drive circuit of contact panel.
8. contact panel according to claim 7, it is characterised in that the de-multiplexing circuitry is arranged on the contact panel
The non-display area of middle array base palte, the signal selecting circuit are arranged on the non-display area of array base palte in the contact panel.
9. contact panel according to claim 7, it is characterised in that the viewing area of the array base palte is additionally provided with least
Two public electrode blocks, each public electrode block are drawn by touching signals line；
In the display stage, common electric voltage is applied at least two public electrodes block by the touching signals line；
In the touch-control stage, touching signals are applied at least two public electrodes block by the touching signals line.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510232449.5A CN104777955B (en) | 2015-05-08 | 2015-05-08 | The drive circuit and contact panel of a kind of contact panel |
| US14/849,533 US9733755B2 (en) | 2015-05-08 | 2015-09-09 | Touch panel and drive circuit thereof |
| DE102015117802.8A DE102015117802A1 (en) | 2015-05-08 | 2015-10-20 | Touchpad and drive circuit of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510232449.5A CN104777955B (en) | 2015-05-08 | 2015-05-08 | The drive circuit and contact panel of a kind of contact panel |
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| Publication Number | Publication Date |
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| CN104777955A CN104777955A (en) | 2015-07-15 |
| CN104777955B true CN104777955B (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510232449.5A Active CN104777955B (en) | 2015-05-08 | 2015-05-08 | The drive circuit and contact panel of a kind of contact panel |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9733755B2 (en) |
| CN (1) | CN104777955B (en) |
| DE (1) | DE102015117802A1 (en) |
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| CN105159490B (en) * | 2015-08-24 | 2019-02-15 | 重庆京东方光电科技有限公司 | Touch-control display panel and its driving method and touch control display apparatus |
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| CN105572936A (en) * | 2015-12-22 | 2016-05-11 | 武汉华星光电技术有限公司 | Narrow-bordered In Cell-type touch display panel structure |
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| TWI749689B (en) * | 2019-09-08 | 2021-12-11 | 聯詠科技股份有限公司 | Driving system, sensing method and driving circuit for touch display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20160328072A1 (en) | 2016-11-10 |
| US9733755B2 (en) | 2017-08-15 |
| CN104777955A (en) | 2015-07-15 |
| DE102015117802A1 (en) | 2016-11-10 |
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